WEBVTT - Why do hurricanes follow such peculiar tracks?

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<v Speaker 1>com m z y dot com. Welcome to brain Stuff

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<v Speaker 1>from how Stuff Works dot com where smart Happens. I

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<v Speaker 1>am Marshall Brain with today's question, why do hurricanes seem

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<v Speaker 1>to move as if they have a mind of their own?

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<v Speaker 1>And why do they follow such peculiar tracks. Hurricanes that

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<v Speaker 1>threatened the United States start their lives over the Sahara

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<v Speaker 1>Desert in Africa. They move out over the Atlantic Ocean

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<v Speaker 1>to build into tropical storms and then hurricanes. While they're

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<v Speaker 1>over the Atlantic near the equator, hurricanes are pushed toward

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<v Speaker 1>the United States by trade winds. Trade winds are very

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<v Speaker 1>consistent westward wind ends near the equator. Once the storm

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<v Speaker 1>rises up towards twenty five or thirty degrees latitude. The

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<v Speaker 1>top of Florida is at a latitude of thirty degrees,

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<v Speaker 1>the trade winds are no longer a factor, and local

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<v Speaker 1>weather over the United States has a big influence. Winds

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<v Speaker 1>along the East Coast tend to blow in a north

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<v Speaker 1>or northeast direction, and there's also the eastward blowing jet stream.

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<v Speaker 1>The northern winds often cause a storm to make a

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<v Speaker 1>sudden right hand turn and track right up the east coast.

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<v Speaker 1>The jet stream can cause storms to approach the east

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<v Speaker 1>coast and then back off. Any number of fronts or

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<v Speaker 1>pressure zones may be in place over the United States

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<v Speaker 1>as the hurricane comes in, and these systems have their

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<v Speaker 1>own winds and can influence a hurricane as well. If

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<v Speaker 1>a storm tracks from the west and doesn't get far

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<v Speaker 1>enough north to lose the effect of the trade winds,

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<v Speaker 1>it will instead continue westward into the Gulf of Mexico

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<v Speaker 1>with those trade winds and land in Texas or Mexico.

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<v Speaker 1>For more on this and thousands of other topics, visit

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